I need to make a gluten free version of the Amazing Mac & Cheese sauce from the Uncheese Cookbook. I'm using it for Welsh Rarebits! It has 1/2 a cup of flour as well as the usual nooch sauce suspects - soya milk, olive oil, mustard.

I have soya, tapioca, quinoa & chickpea flours. Do I need to go back to the store to get a gf mix or will I be able to make something yummy with these?